This experiment was conducted in the field of poultry, College of Agric., Al-Muthanna Univ., to investigate the effects of replacing maize by Silica free rice husks in pullet diet and on some production performance of broiler. Three hundred one-day old broiler chicks (Ross 308), were categorized into four, each was replicated three times (75 birds per treatment) to represent control, addition of 5% silica-free rice husks to diet, 7% silica-free rice husks to diet and 10% silica-free rice husks to diet. Addition of 7% silica-free rice husks to diet significantly increased dressing percentages with edible, without edible viscera, relative weight of the heart, liver and gizzard by 65.24, 69.63, 0.325, 1.88 and 2.18%, respectively, as compared to other treatments. The relative weight of breast, thigh and drumstick were also substantially increased 27.59, 16.03 and 12.69, respectively. While, neck, wings and back were highly increased by 27.86 and 12.25 and 5.37%, respectively, with the addition of 10% silica-free rice husks to diet. 7% silica-free rice husks to diet showed superiority over check, 5% and 10% free-silica husks addition treatments in length and relative weight of small intestine and cecum (duodenal, jejunum and ileum).
Faisal M. AL- Tahir, Agric. College, Al-Muthanna Univ.
Kasim M. Hello, Science College, Al-Muthanna Univ.
Mohammed Thamer AL-Giashy, Agric. College, Al-Muthanna Univ.